Mobility-Aware VRU Message Merging for Sidelink Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing the load on the UU interface by efficiently merging and transmitting Vehicle-to-Everything (V2X) messages, particularly in emergency situations, while ensuring reliable and timely communication for vulnerable road users (VRUs) based on mobility information.
Innovation Solution
A method and apparatus for merging VRU messages by a network, where messages received from multiple VRUs within a preconfigured time period are combined into a single message based on mobility changes, with immediate transmission in emergency situations and scheduled transmission otherwise, using a SoftV2X header and PSM container fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple VRU messages are transmitted individually through the UU interface, then each message is delivered reliably, but the load on the UU interface increases significantly
Solution Approach 1:
The patent merges multiple VRU messages received from different vulnerable road users into a single consolidated message for transmission through the UU interface. This combining approach maintains reliable delivery of all VRU information while significantly reducing the number of individual transmissions required, thereby lowering the load on the UU interface between the base station and the application server.
2Productivity
If VRU messages are merged and transmitted at scheduled time points, then the UU interface load is reduced, but the transmission delay increases in emergency situations
Solution Approach 1:
The patent implements dynamic transmission timing that adapts to the content of VRU messages. While scheduled transmission points are used for normal messages to reduce interface load, the system dynamically adjusts to transmit messages immediately when emergency indicators are detected in the VRU data, such as sudden mobility changes or hazardous situations, thereby preventing excessive delays in critical scenarios.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor the content of received VRU messages for emergency indicators. When such indicators are detected, the feedback triggers an immediate transmission decision, overriding the scheduled transmission plan. This feedback-driven approach ensures that emergency messages are transmitted without unnecessary delays while maintaining the scheduled transmission schedule for non-emergency messages.
3Loss of time
If all VRU messages are transmitted immediately without merging, then the transmission delay is minimized, but the number of transmissions and interface load increase
Solution Approach 1:
The patent performs preliminary analysis of VRU messages upon receipt to determine whether they contain emergency indicators or normal information. This preliminary action allows the system to immediately transmit emergency messages without delay while scheduling non-emergency messages for later consolidated transmission, thereby optimizing both response time and transmission efficiency from the outset.
Data Source
AI summary
Disclosed are a method for merging and transmitting, by a network, VRU messages and an apparatus therefor. The method comprises the steps of: receiving, through an uplink, a first VRU message including information on a first VRU; and transmitting, through a downlink at a preconfigured time point, a second VRU message in which a plurality of VRU messages received from a plurality of VRUs for a preconfigured time period are merged, wherein it is determined whether to merge the first VRU message with the second VRU message according to a mobility change calculated on the basis of previous mobility information on the first VRU and mobility information obtained from the first VRU message, and, when the mobility change is greater than or equal to a preconfigured threshold, the first VRU message is transmitted through the downlink without merging the first VRU message with the second VRU message.